Marielle Weihs defeated Christine Sperling 6-1 6-7 7-5 in the Enschede 10K round of 32 on clay. The upset overturned the form book — Christine Sperling came in leading the head-to-head 1–0. Marielle Weihs claimed a first win over Christine Sperling in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-04-04 | Porto Santo 1 10K | R16 | hard | Christine Sperling | 6-4 6-2 |